You're tripping over some of the conversion rules AS3 has inherited (by necessity) from EcmaScript. The LineSeries can correctly render missing data, but unfortunately the XML API never reports the data as missing, only as an empty string....which converts to the numeric value 0.
The bug has been logged, but if you want to work around it in the meantime, any non-numeric value will get interpreted as bad data and stripped out of the data set.
i.e., turn soemthing like this:
<value>
<a></a>
<c>12</c>
</value>
Into this:
<value>
<a>junk</a>
<b>junk</b>
<c>12</c>
</value>
Ely.
-----Original Message-----
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of pasflex
Sent: Wednesday, May 24, 2006 11:09 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Problem with LineChart - Flex 2 Beta 3
Any ideas on this?
I've tried setting filterData to true on the lineseries (should be by default anyhow) but it still seems to try to plot these null values.
Thanks.
--- In flexcoders@yahoogroups.com, "pasflex" <[EMAIL PROTECTED]> wrote:
>
> We are populating a line chart with some data returned from an
> HTTPService. The data is xml which flex parses to an object
> (resultFormat='object'). For some of the LineSeries the data is
not
> contiguous. The problem is that the chart is still drawing these
> missing datapoints. It draws them at 0, although the datatips
show
> no value for them. We have tried returning an empty tag or
leaving
> the tag out completely but the points still show up. Here's some
> sample code that demonstrates the issue without using the HTTPService.
> Any ideas?
>
> <?xml version="1.0"?>
> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
> <mx:Script>
> <![CDATA[
>
> [Bindable]
> private var xml:XML =
> <values>
> <value>
> <a></a>
> <b>2</b>
> </value>
> <value>
> <a>1</a>
> <b>2</b>
> </value>
> <value>
> <a>1.5</a>
> <b>2</b>
> </value>
> <value>
> <b>2</b>
> </value>
> </values>;
>
> ]]>
> </mx:Script>
> <mx:Panel title="Line Chart">
> <mx:LineChart dataProvider="{xml.value}"
showDataTips="true">
> <mx:series>
> <mx:Array>
> <mx:LineSeries yField="a"/>
> <mx:LineSeries yField="b"/>
> </mx:Array>
> </mx:series>
> </mx:LineChart>
> </mx:Panel>
> </mx:Application>
>
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